Get osh-infra netpol gate passing

This change adds in missing network policy overrides for
fluent-daemonset and prometheus-exporter, as well as removes
existing mariadb network policies overrides that were causing
the network policy check job to fail.

Change-Id: Ib7a33f3d14617f9a9fda264f32cde7729a923193

fluentd/templates/monitoring/prometheus/exporter-network-policy.yaml

@@ -0,0 +1,20 @@
+{{/*
+Copyright 2019 The Openstack-Helm Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/}}
+
+{{- if and .Values.manifests.monitoring.prometheus.network_policy_exporter .Values.monitoring.prometheus.enabled -}}
+{{- $netpol_opts := dict "envAll" . "name" "application" "label" "prometheus-fluentd-exporter" -}}
+{{ $netpol_opts | include "helm-toolkit.manifests.kubernetes_network_policy" }}
+{{- end -}}